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Sql Syntax Help

Posted on 2008-06-20
2
294 Views
Last Modified: 2010-03-20
Hello, please reffer to my question here:

http://www.experts-exchange.com/Programming/Languages/SQL_Syntax/Q_23494097.html

I chose to use:
select s.serverip, p.serverid, isnull(p.processCnt ,0) processCnt
from servers s left outer join
( Select serverid, count(1) processCnt from processqueue
Group by serverid) as p
on s.serverid = p.serverid And s.status = 100
and p.processCnt <= s.capacity
order by p.processCnt

But, I found an issue with it after I closed the question.  The problem is that p.serverid is returning null when p.processCnt  returns zero.  I need it to return the ServerId and not a null value. How can I fix this?

Thanks Very Much!
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Question by:grogo21
2 Comments
 
LVL 2

Assisted Solution

by:jgoeders
jgoeders earned 100 total points
ID: 21835326
Hmmm....it seems that your sub-query p is counting records.  If the count is 0 that means there are no records.  How will it get a serverID out of no records?
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Accepted Solution

by:
grogo21 earned 0 total points
ID: 21835586
Solution:

select s.serverip, s.serverid, count(*) as processes
from servers s left outer join processqueue p on s.serverid = p.serverid
where s.status = 100
group by s.serverid, p.serverid, s.capacity, s.serverip
having count(*) < s.capacity
order by count(*)

Thanks!
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